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HEART NOTES HEART CHAMBERS: Atrium: (singular, atria: plural) -upper chambers of the heart - receive blood Ventricles: lower chambers of the heart - force blood OUT of the heart Right side of the heart deals with blood LOW in oxygen Left side of the heart deals with blood HIGH in oxygen Septum: wall that separates the R & L ventricle Apex: Bottom “tip” of the heart BLOOD VESSELS: ARTERIES: carry blood AWAY from the heart - carry blood HIGH in oxygen to the body - bright red due to being high in O2 - PULMONARY ARTERY: (carries blood from the R ventricle to the lungs) exception to the “artery” definition, Pulmonary Artery carries blood LOW in O2, VEINS: carry blood BACK/TOWARDS the heart - carries blood LOW in oxygen - dark red due to being low in O2 - PULMONARY VEIN: (carries blood from the Lungs to the L atrium) exception to the “vein” definition, carries blood HIGH in O2 CAPILLARIES: - tiny blood vessels that connect the smallest arteries (arterioles) to the smallest veins (venules). - capillaries form a network throughout the body for the exchange of oxygen and metabolic waste products, and carbon dioxide between blood and tissue cells AORTA: largest artery in the body VENA CAVA: largest vein in the body ASSORTED VOCABULARY: Angina Pectoris: pain from the inadequate, (poor) flow of O2 to the heart - AKA: chest pain Myocardial Infarction: “heart attack” - signs/symptoms of a heart attack: chest pain, radiating pain in the shoulder, arm, neck, jaw, nausea and vomiting, diaphoresis (profuse sweating) and dyspnea (difficulty breathing) - symptoms of a heart attack frequently mimic indigestion